I don't know anything about Wondershare. But it seems something may have got messed up in the conversion. Or maybe there is an identifier on the converted clip that has FCP confused and it really is 25 fps.
To begin, your sequence settings don't match your clips. You want a Pro Res sequence. Let FCP set this automatically by dragging a Pro Res to an empty sequence and when gives you a message asking whether you want the sequence to match the clips, click yes. Then hit command 0 again and see whether the frame rate is set at 30 or 25.
If it really is 30, then it will need to be converted and re-imported. It can be done in Compressor or in Cinema Tools. If you have used Cinema Tools before, great. Of not, I'll defer to others because it's been a while and I don't want to mess you up.
Good luck.
Russ